Concrete-wall-forming apparatus.



PATENTED SEPT. 11, 1906.

2 SHEETS-SHEET 1.

ATTORNEYS H. P. ENGELHARDT. CONCRETE WALL FORMING APPARATUS.

APPLIOATION FILED NOV. 20 1905.-

WI NE SSE S PATENTED SEPT. 11, 1906.

H. P. ENGELHARDT.

CONCRETE WALL FORMING APPARATUS.

APPLICATION TILED NOV. 20. 1905.

2 SHEETSSHEET 2.

Rt fl H A TTORNE Y5 UNITED STATES PALFENT OFFICE.

HARRY P. ENGELHARDT, OF NEW YORK, N. Y.

' OONORETE-WALL-FORMING APPARATUS.

No. ceases.

To all whom it may concern/.-

Be it known that I, HARRY P. ENGEL- HARDT, a citizen of the UnitedStates, and a resident of the city of New York, Woodhaven, borough ofQueens, in the county of Queens and State of New York, have invented anew and Improved Concrete-VVall-Forming Apparatus, of which thefollowing is a full, clear and exact description.

This invention relates to improvements in apparatus employed in theconstruction of concrete walls of buildings and the like, the objectbeing to provide a device for this purpose that will be portable andreadily adjusted to the work to be done.

I will describe a concrete-wall-forming apparatus embodying my inventionand then point out the novel features in the appended invention.

claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all thefigures.

Figure 1 is a perspective view of a concrete-wall-forming apparatusembodying my Fig. 2 is a section on the line :0 c1: of Fig. 1 and Figs.3 and 4 are plans showing the standards employed as arranged fordifferent angles.

The apparatus comprises standards or uprights 1, mounted on baseportions consisting of bars 2, which extend parallel with the wall orthe like to be built, and center bars 3, arranged at right angles to thebars 2, while on the outer ends of the center bars 3 are crossbars 4.The several bars and standards are suitably connected together. As hereshown they are connected by means of angle-plates 5, of iron, throughwhich bolts pass, the said bolts of course passing through the standardsand base-bars. From the bars 3 brace-bars 6 extend upward to connectionwith the standards or uprights 1. At the sides of the standards oruprights are channels 7, the outer walls of which are formed by metalplates 8. These channels are designed to receive the ends of mold platesor boards 9.

In use the standards and mold plates or boards will be arranged at theinner and outer sides of the wall. In other Words, they will be s acedapart so that the concrete may be fille in between them, and to hold theinner and outer standards rigidly in parallelism I Specification ofLetters Patent.

Application filed November 20, 1905. Serial No. 288.235- I rammed Sept.11, 1906.

employ spacing-blocks 10, to which a metal band 11 is secured, thestandards passing between the outer ortions of the metal band and thespacinglock 10, and between said outer ends of the band and thestandards are tightening-wedges 12. In Figs. 1 and 2 I have shown thestandards having the channels formed for the straight sides of a wall.In

Fig. 3 the channels are arranged at an angle adapting the device forbuilding an angular wal -such, for instance, as a bow-window of a house.In this instance the inner standards have the outer walls of theirchannels formed by angle-plates l3that is, the plates are turned inwardfrom the center. The plates 14 on the outer standards are curved fromtheir center outward. In Fig. 4 the device is arranged for'the corner ofa building, and in this instance the plates 15 on the outer standardsare similar to the plates 14, while the plates 16 for the innerstandards have their sides at ri ht an les to each other, as clearlyindicatec? in sai Fig. 4.

In the building of a wall the inner and outer standards will be arrangedat desired intervals and spaced at various distances apart, as mayberequired for the building. As the wall progresses from the foundationthe mold lates or boards 9 will be added, and after the finishin of thewall it is obvious that the boards may e readily removed and also thestandards or uprights.

Having thus described my invention, I claim as new and desire to secureby Letter Patent 3 I 1. In an a paratus for the purplose described, stanards provided with c annels, base-bars on which the standards aremounted, mold plates or boards adapted to engage their ends in saidchannels and a spacing black removably engaging with said standar s.

2. In an apparatus for the purpose described, standards or uprightshaving channels, mold-plates forming the outer walls of said channels,base-bars on which the standards are mounted, braces extended from thebase-bars'to said'standards, a spacing-block adapted to engage betweenthe inner and outer standards, a metal strap attached to said block, andWedges for engaging between the strap and standards.

3. An apparatus for the purpose described,

comprising standards haw ring channels, angle- I boards havin their endsdetachably engaged r o plates forming the outer walls of said chanin thechanne s. I nels, base-bars on which'the standards are In testimonywhereof I have signed my mounted,'and mold plates-0r boards adapted nameto this specification in the presence of 5 to enage with their ends insaid channels. two subscrib' witnesses. 4. 11 an apparatus for theFurpose de- RY P. ENGELHARDT.

scribed, inner and outer portab e standards Witnesses:

having channels, base-bars to which the JOHN L. YOUNG. standards areconnected, and mold plates or i W. P. BEACH.

